MXPA98008702A - Combustion apparatus for liquid fuel and combustion wick - Google Patents

Abstract

A combustion apparatus for making use of capillary phenomenon to suck up a liquid fuel for combustion is made compact by forming a tip end of a combustion portion (61) of a combustion wick (6) into a tapered shape or forming a tip end of a wick holder (77) to varying levels in a circumferential direction, thus having the combustion wick and ignition member approach each other without contact with flames.

Description

COMBUSTION APPARATUS FOR LIQUID FUEL AND COMBUSTION MECHANISM DESCRIPTION OF THE INVENTION This invention relates to a wick that is pulled up to be burned a liquid fuel in a lighter and another liquid fuel combustion apparatus that uses fuel from the alcohol or the like already a burner for liquid fuel equipped with the wick. In particular, this invention relates to a wick and a peripheral wick structure to obtain a desired combustion state in a burner (e.g., a cigarette lighter, torch, flashlight or other lighting device with fire, lamp or the like. using a liquid fuel such as alcohol, benzene or petroleum hydrocarbon An alcohol fuel such as ethyl alcohol, a benzine fuel of the petroleum benzine type or a liquid gas fuel such as butane or propane gas is generally used as fuel for a cigarette lighter, a fire-lighting device, torch, lamp or other burner of that type.The performance, ease of use, structural design of these burners differ depending on the type of fuel used, and each has its own In the case of a liquid gas fuel, for example, the has pressure is high in the high temperature range from which and the container that stores the fuel must have a pressure-resistant structure. In addition, the length of the flame changes with the variation in gas pressure and since it is a characteristic of gas pressure to vary logarithmically and greatly with temperature, a large change in flame length with temperature becomes a particular problem. In order to reduce this variation in flame length, the burner's fuel feed mechanism requires a countermeasure of special design to compensate for the temperature, which complicates the structure and is disadvantageous from a cost point of view. In contrast, since a liquid fuel such as an alcohol fuel is a liquid at ordinary temperatures it is also relatively low in vapor pressure, it does not require a pressure resistant vessel in the fuel storage section, and thus simplifies the structure of the burner and is advantageous from the point of view of cost. In addition, in the liquid fuel burner, the means used to feed the liquid fuel from the fuel storage section to the flame producing section is generally a wick that uses the surface tension of a liquid fuel to pull it upwards through the liquid fuel. fine continuous holes or fine holes between the fibers bound by capillarity and burning it at its tip. Specifically, the wick used to pull the fuel up is in the form of a strip obtained by twisting fibers, obtained by tying fibers or by using both with glass fibers included in a cotton yarn and the result interwoven with fine metallic wires to prevent disintegration. or similar, whose lower end portion serves to pull the fuel that is to be burned at its upper tip. The section that produces flame of the wick has to be sealed by means of an openable / lockable lid in order to prevent the operation of the liquid fuel when it is not in use. Also, it should be installed near the wick, a knocking wheel or other ignition mechanism to cause the sparks formed to ignite the wick. Since a closure cap is generally installed to close and open around a pivot at one end thereof, a portion of the cap to seal the flame producing section of the wick passes along an arcuate path, and thus both when trying to make more compact that lighter or another burner the need to prevent the interference of this path with the tip of the wick, the wick holder, the knocking wheel etc. obstructs the reduction in size. Particularly, as regards the sealing of the wick holder portion of the wick, the sealing portion of the cap must be interposed between the wick support portion and the ignition mechanism, for example the beating wheel, for the purpose to allow covering the peripheral portion of the wick holder, and if the igniter mechanism is separated from the wick in order to avoid interference of the sealing end portion with the ignition mechanism, a problem of ignition performance degradation may arise due to for example the elongated travel distance of the spark. Therefore, good ignition performance is ensured preferably by placing the ignition mechanism close to the wick. On the other hand, when the igniter mechanism is installed closer to the wick, the air flow around the flame changes to prevent a secondary air from entering the flame in proportion as the ignition mechanism is placed closer of the flame and the flame tend to swell towards the side of the ignition mechanism in such a way that its edge approaches or comes into contact with it. The temperature of the ignition mechanism (for example, hitting wheel) may tend to increase. When the kicking wheel is heated, the heat can for example be led to its plastic support portion to melt the support portion. The kicking wheel can then be disarmed by means of the pressing force of the stone pushed towards the hitting wheel, rendering it useless. Also when a wick made by tying glass fibers or other fiber material and the bundle of glass fibers at the tip of the wick is undone and expanded by the contact of the end portion of the cap with the tip of the wick or by contact with the object to be lit (for example, a cigar) with the tip of the wick, the flame thickens, as shown in Figure 8, which will be subsequently decribed, possibly to approach the ignition mechanism (for example, beating wheel) and at the same time the sealing portion of the lid can catch a portion of the tip of the broken wick and can degrade in its operation that prevents evaporation. Considering the above circumstances, this invention intends to provide a wick for a liquid fuel burner which by changing the shape of the section producing the flame allows the igniter mechanism to be located close to the wick and at the same time avoids interference with the ignition mechanism. the lid. The invention also proposes to provide a liquid fuel burner that by changing the shape of the wick holder allows the ignition mechanism to be placed in a position close to the wick to ensure a good ignition operation, avoiding interference with the cap and also avoids high temperature states preventing the swelling of the flame on the side of the igniter mechanism. The burner wick for liquid fuel of the invention which overcomes the problems mentioned above, is characterized in that as regards the extraction by means of capillarity of the extraction section of the liquid fuel that is going to be burned in the production section of flama, the flame producing section is conformed with a portion of thinned tip. Where the eeta flame producing section composed of glass fibers, its tip portion is preferably melt bonded to form a sharp point of a brush. This wick can be formed by joining glass fibers, heating them and melting a part of them with a high temperature burner and pulling up and separating the molten portion. On the other hand, the wick may be one with a flame producing section composed of a porous glass material having continuous bubbles or a sintered porous ceramic material and formed in a thinned form. The wick can be one whose flame producing section and its extraction section are formed of different materials or else one whose flame producing section and extraction section are integrally formed of the same material. Liquid fuel can be used as an alcohol fuel, for example, a lower monovalent alcohol, ie methyl alcohol, ethyl alcohol or propyl alcohol, as its main component and which is mixed with a hardened hydrocarbon such as hexane or heptane to color the flame, or a hydrocarbon benzine or petroleum or similar. According to the aforementioned wick, since interference with the lid is prevented by forming the tip of the flame producing section in a thinned form, the separation to which the lid and the wick are installed can be reduced , the separation with which the wick and the ignition mechanism are installed can be reduced and also the lid can be formed smaller, which increases the freedom of design and makes it possible to make a smaller burner with lower cost and other advantages . Where the tip of a flame-producing section made of glass fibers is melt-bonded or where a flame-producing section composed of a porous glass material or a porous ceramic material has a thinned shape, the tip of the wick is not it frays or experiences further deformation even if a portion of the lid makes contact with the tip portion of the wick when the lid is placed to prevent evaporation on the wick or if a cigarette or other object to be ignited makes contact with it. Since the shape of the wick does not change even with repeated use for a long period of time, a flame with a stable shape can be maintained, the increase of the temperature of the components near the flame can be avoided since the flame does not it approaches or makes contact with them, and a good sealed state of the lid can be adjusted without any portion of the wick being trapped in the space of the lid when it is opened or closed. Particularly where the flame producing section of the wick is formed by heating and melting attached glass fibers and removing the molten portion, it can be easily melt bonded and provided with a good shape. The liquid fuel burner of the invention consists of a wick to pull up by means of the capillarity of a fuel in the extraction section to be burned in the flame producing section, an ignition mechanism to ignite the producing section of flame of the wick and a lid to prevent evaporation capable of sealing the flames producing section of the m, which opens and closes and eeta characterized in that it provides a wick support to hold the wick around the production section of flame at the tip of the wick and at the tip of the wick holder is formed with different height in a circumferential direction, a tip portion of the greater height is arranged so that it is interposed between the section producing flame of wick and the ignition mechanism. Preferably the closure cap is formed to open and close about a pivot in its extreme portion and an edge portion of a sealing portion for sealing the flame producing section of the wick is formed to differ in height in a circumferential direction in addition to the shape of the tip of the wick holder. As a wick held in the wick holder of the above type, one may be used whose flame producing section and extraction section are formed of different materials, or one whose flame producing section and extraction section are integrally formed of the same material. The structure for forming the tip portion of the wick holder to differ in height in the circumferential direction, as in the embodiments that will be explained later, may be one in which the wick holder is formed with an inclined surface or may be a in which the tip of the wick holder is stepped. According to the aforementioned burner, since the tip portion of the wick holder for holding the wick is formed so that it differs in height in the circumferential direction and a portion of the greater height is placed interposed between the wick and the mechanism. ignition, the central position of the flame during combustion by the wick held by this wick holder is displaced from the center of the wick in a direction away from the ignition mechanism, allowing the ignition mechanism (for example a striking wheel ) so that it is arranged close to the wick. Furthermore, since the aforementioned configuration of the wick holder allows the lid to be formed with smaller dimensions, the ignition mechanism can be installed near the wick to assure a good ignition performance while avoiding interference with the lid. and prevent the increase of temperature and also improve the freedom of design and obtain a reduction in size and cost. Wherein the shape of the tip of the sealing portion of the cap is formed to defer the height in the circumferential direction in addition to the shape of the tip of the wick holder, the inner diameter, the height and other dimensions of the seal structure The valve to prevent evaporation of the wick may be less, which contributes to the reduction in size because the path of the opening / closing operation becomes short and the ignition mechanism can be placed closer. Wherein the wick held by the wick holder of the above type has a shape removed from the tip portion of the flame producing section on the opposite side of the pivot in the open / close operation on the opposite side of the pivot in operation of opening / closing the lid, for example when the tip of a wick made of glass fibers is fused together with a pointed shape like the tip of a brush or where it is formed by means of sintering, interference with the opening / closing operation of the lid and the closing lid can be carried out with reduced dimensions. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic sectional view of a lighter as an example of a liquid fuel burner incorporating a wick which is a first embodiment of the invention. Figure 2 is a schematic sectional view of a lighter as an example of a liquid fuel burner incorporating a wick which is a second embodiment of the invention. Figure 3 is a schematic sectional view of a lighter incorporating a wick which is a third embodiment of the invention. Figure 4 is a schematic sectional view of a lighter incorporating a wick which is a fourth embodiment of the invention. Figure 5 shows sectional views of the essential portions of the examples of structures for sealing the wick with the lid according to a fifth embodiment of the invention. Figure 6 shows sectional views of the essential portions of the examples of wick support structures and structures for attaching the wick to an upper lid according to an eexta modality of the invention. Figure 7 shows views for explaining a step of fusion bonding the tip of the wick made of glass fibers in the first embodiment. Figure 8 is a schematic sectional view showing how the shape of the flame changes in a lighter which is a comparative example in test 1. Figure 9 is a schematic sectional view of a lighter as an example of a liquid fuel burner which is a seventh embodiment of the invention. Figure 10 is a schematic sectional view of a lighter that is an eighth embodiment of the invention. Figure 11 is a schematic sectional view of a lighter which is a ninth embodiment of the invention. Figure 12 is a schematic sectional view of a lighter that is a tenth embodiment of the invention. Figure 13 is a schematic sectional view of a lighter that is an eleventh embodiment of the invention. Figure 14 shows sectional views of the essential portions of the examples of structure of wicking by the lid according to a twelfth embodiment of the invention. Figure 15 shows sectional views of the essential portions of examples of wick support structures and structures for attaching the wick to an upper cap according to a thirteenth embodiment of the invention. Figure 16 is a schematic sectional view showing another example of the wick of the seventh embodiment. Figure 17 is a graph showing the results of a test 2 when the change in the shape of the flame caused by placing a metal plate near the wick of a lighter according to the invention was measured. Figure 18 is a graph showing another results of test 2 when the change in flame shape caused by placing a metal plate near the wick of a comparative lighter was measured. Modes of the liquid fuel burner and its wick according to the invention will be explained below with reference to the drawings. <First mode > Figure 1 shows the general sectional structure of a lighter as an example of a liquid fuel burner incorporating a wick according to this embodiment of the invention. A wick 6 is formed separately from different materials in a flame producing upper section 61 and a lower extraction section 62 and the two are joined by a wick support 7 with the lower end portion of the flame producing section 61 and the upper end portion of the extraction section 62 making contact. The flame producing section 61 is made of glass fibers by for example attaching glass fibers and melting the tip portion 6la to give it a pointed shape like the tip of a brush. In the formation as illustrated in FIG. 7, the fiberglass filaments are cylindrically attached to the required diameter as a rope and the middle portion of the fiber bundle is heated with a high temperature burner G, as shown in FIG. TO) . Then, as shown in (B), the opposite ends of the fiberglass side are pulled outwardly as the hot portion of the fiberglass filaments F is melted. By means of this molten portion of the Glass fibers melt and join together in the tip portion pulling upwards to form a tip like that of a brush. Further, as shown in (C), a base 61b is cut, obliquely for example with a prescribed length, thus manufacturing the flame producing section 61 of the wick 6 to have the attached tip portion 61a. The base portion of this flame producing section 61 is inserted and fixed in the cylindrical wick holder 7 made of metal. The extracted section 62, formed as a bar having a large diameter head portion 62a when molding and sintering the polyethylene powder, is first inserted into a fuel tank 2 through a mounting hole in a upper lid 4, the lower end of the head portion 62a of the extraction section 62 is retained by means of a retainer portion at the lower end of the hole of the upper lid 4, and a fixing cord 7a at the outer periphery of the support of wick 7 is screwed into a threaded hole 4a from above to trap a ring in the shape of 018, joining the flame producing section 61 to the top cover 4 while joining it to the extraction section 62. The amount of fuel coneumido by the wick 6 when ignited, the shape and length of the flame are determined by the eepeeor, number and length of the glass fibers of the flamae producing section 61. In contrast, the model of formation of the spaces in the extraction section 62, which determines the extraction of fuel and the feeding characteristics, differs with the thickness, the sintered polyethylene particle diameter, the sintered density and the like of the extraction section 62. The portion 62a of the extraction section 62, is formed with a large diameter so that it has a large volume, constitutes a fuel tank for storing the liquid fuel. The combustion stabilization is obtained thanks to this fuel tank. In the case of, for example, a cigarette lighter incorporating the wick 6, a flame producing section 61 having a glass fiber with a thickness of 6 μm, a fiber deficiency (metsuke value) of 150 mg / cm 3, an external diameter of 3 mm and a length of 10 mm is inserted in the wick holder 7 so that a length of 3 mm protrudes from the tip of the wick holder 7. On the other hand the extraction section 62 is obtained by placing a molded polyethylene powder that is a mixture of 70-200 mesh particles with an average particle size of 140 mesh and sintered for 10 minutes at 170 ° C. The upper portion 62a is formed with an outer diameter of 4.2 mm and a length of 3 mm and the lower leg portion portion with an outer diameter of 4 mm and a length of 37 mm. Eeta wick 6 ee incorporated in the lighter 1, as the burner with the extraction section 62 inserted in a fuel tank section 5 to pull up and feed liquid fuel to the flame producing section 61 and effect combustion in the tip 6a of the flame producing section 61 when ignited with an ignition mechanism 10. When continuous combustion is effected without interruption, the flame of the flame producing section 61 is maintained in change in shape or length when establishing a characteristic wherein the amount of fuel supplied by the extraction section 62 is equal to or greater than the amount of fuel consumption of the flame producing section 61.

The structure of the lighter l will be explained below. The lighter 1 has a tank 2 with a cylindrical shape with a closed bottom. The fiber material 3 (filler) is inserted into the interior of the fuel tank 2 and the upper cover 4 is fixed to the upper portion of the tank 2 to constitute the fuel tank section 5 for storing the liquid fuel. Tank 2 is provided for example as a molded article made of polypropylene with an interior volume of 5 cm3. The fiber material 3 is polypropylene fiber of a thickness of 1-2 denier compacted in tank 2 at a density of 0.1 g / cm3. 4 g of liquid fuel, a mixture of 95% by weight of ethyl alcohol and 5% by weight of n-hexane, is poured and impregnated in this fiber material 3 for storage there. The wick 6 is inserted to pass through the middle of the lid 4 vertically in the tank 2 and the wick support portion 7 is fixed to the upper cover 4. The lower end portion of the wick extraction section 62 6 makes contact with the fiber material 3 in the tank 2 and absorbs the liquid fuel impregnated in the fiber material 3 using capillarity. The flame producing section 61 of the 6 wick ignites to burn and generate a flame, and the protruding length of the flame producing section 61 of the wick holder 7 is just about 3 mm, as mentioned above to obtain a flame length of 30 mm. The ignition mechanism 10 is installed in the upper cover 4 in front of the tip of the flame producing section 61 of the wick 6. A clamp 11 of the ignition mechanism 10 fixed to the cover 4 has a flint 12 inserted with vertical movement and ee provides a knock wheel 12 at the upper end of the clamp 11 as the member closest to the flame H. The tip of the flint 12 is pressed against the peripheral surface of the rotating striker wheel 13 by the energizing force of a thrust spring of the flint 14 rotation of the rotating striker wheel 13 causes sparks to fly towards the wick 6. A cover 16 for preventing evaporation is provided to cover the flare producing section 61 of the wick 6 in an openable / lockable manner together with the portion protruding from the wick holder 7. This cover 16 is rotated rotationally by means of a fork 17 at a final portion of the upper surface of the lid 4 of tank 2. A ring or in the form of a fine end in the outer root periphery portion of the wick holder 7 and the inner peripheral surface of the sealing portion of the lid 16 presses there to improve the sealing properties. As the lighter 1 is assembled, the upper end of the flame producing section 61 of the wick 6 is 2.5, greater than the height of the contact point of the rotating striker wheel 13 and the flint 12, and the pointer relation is set to such that the distance between the center of the wick 6 and the center of the rotating striker wheel 13 is 10 mm. As regards the shape of the flame H during ignition, under the conditions set to have a flame of 30 ram, the flame width is 9 and the position of the largest flame width is 3 mm from the lower end of the flame. the flame and this flame H burns ein touching the rotating beating wheel 13 which is the ignition mechanism 10. In the lighter 1 of the previous embodiment, the fact that the tip portion 6a of the flame producing section 61 of the wick 6 is thin cut the radius of rotation of the arch of the lid 16 in relation to the point of support 17 (spike) does not come into contact with the tip of the wick 6 or the wick holder 7. According to this, the distance between the pivot point of the lid 16 and the wick 6 can be reduced and furthermore, since the inner diameter of the sealing portion of the lid 16 does not need to be expanded much in relation to the outer diameter of the wick holder 7, the lid 16 and the lighter 1 can be of small dimensions. In other words, the pivoting position of the lid 17 has to be fixed in such a way that during its opening / closing operation the inner surface of the lid 16 does not touch the tip of the wick 6 or the type of the wick holder 7. If the wick tip portion 61a is not thin, for example in a cigarette lighter or a wick made of glass fibers in an unbonded condition, the distance between the pivot of the lid 16 and the center of the wick 6 has to Set relatively wide to establish a large turning radius making the lid 16 and the overall structure of the lighter large (see figure 8). If it is only desired to make the distance between the pivot and the wick 6 short, this is possible by making the inner diameter of the eellant portion of the closure cap 16 great, but the closure cap 16 rotates in the spaced portion of the cap. The outer diameter of the wick holder 7 is such that the distance between the wick 6 and the rotary beating wheel 13 must be made sufficiently large to avoid interference with the rotary beating wheel 13. The invention, however, allows the reduction of the dimensions in esoe points. <; Second Modality > As shown in Figure 2, the wick 6 of the lighter 1 of this embodiment is made of a material different from that of the first embodiment. The flame producing section 63 of the wick 6 of this embodiment, is a sintered ceramic body, porous, shaped similar to a round rod, contains continuous bubbles (capillary passages) internally and is thin in the tip portion . The upper portion of this flame producing section 63 is mounted to extend from the tip of the wick holder 7 by a prescribed amount (3 mm). This protruding amount, the diameter and the like determine the size of the flame H. For example, it is constituted to have an outer diameter of 3.0 mm. and a length of 10 mm. On the other hand, the upward withdrawal section 62, whose tip portion rests on the lower end portion of the flame producing section 63 is again a porous material made of a sintered body of polyethylene powder and configured in the form similar to a round rod. A notch or coupling groove 63c is provided at the outer, upper periphery of the flame producing section and a protruding part 7b directed towards the center of the upper end portion of the wick soetendor 7 is coupled and retained by the wrist rest. coupling 63c. The lower end portion of the flame producing section 63 is unitarily joined with the upper end portion of the upward removal section 62 by the screwing in of the flame producing section 63 and the wick holder 7 in the cover of the flame. top part 4. The closure cap 16 for sealing the wick 6 and the protruding portion of the wick holder 7 has a seal member 20 attached to the tip portion of its sealing portion. This member 20 is arranged to press on the top cover around the wick holder 7 and establish the seal at the time of closing operation of the closure cap 16. The other portions are formed similar to those of the first modality. The constituent components are similarly assigned and the same symbol is assigned and their explanation is omitted. < Third Mode > As shown in Figure 3, only the shape of the tip portion of the wick 6 of the lighter 1 of this embodiment differs from the second embodiment and other forms are identically structured. The flame producing section 63 of the wick 6 is configured in a shape similar to a rod of a porous ceramic sintered body and its tip portion is of beveled removal (a curved surface is also acceptable) in the opposite side portion of the support pin 17 of the closure cap 16. By this, the interference of the flame producing section 63 with the opening / closing operation of the closure cap 16 is prevented, to allow the two to be placed in proximity . «- Mode Modality > As shown in FIG. 4, the wick 6 of the lighter of this mode is integrally formed in all of the same material. Other aepectoe are structured similarly to those of the second modality (figure 2).

The wick 6 has its flame producing section 63 and the upward removal section 64 integrally formed of a porous ceramic inert body, is retained by the wick holder 7, and has the same configuration as that of Figure 2. < Fifth Modality > Figures 5 (A) to (E) show several examples of the seal structure of the flame producing section of the wick 6 by the closure cap 16. (A) is a structure wherein a seal member is positioned on the top surface of the upper part cover 4 around the wick holder 7 and is sealed by pressing the tip portion 16b of the closure cap 16 onto the seal member 25. (B) is a structure wherein an annular protruding part 4b is provided in the upper part of the cover of the upper part 4 around the wick holder 7 while an eel member 26 similar to a ring is attached to the earring tip portion 16b of the closure cap 16, the seal which is obtained by pressing the seal member 26 on the annular projecting part 4b. (C) is a seal structure similar to that of Figure 1, wherein an O-shaped ring 27 is horizontally adjusted around the wick holder 7, the eel obtained by pressing the inner surface of the closure layer. 16 on the 0-shaped ring 27. (D) is a structure wherein an annular seal member 28 is provided around the tip of the wick holder 7, the seal which is obtained by pressing the tip portion 16b of the closure cap 16 on the annular seal member 28. (E) is a structure wherein an annular overfeed portion 7c ee provided on the tip surface of the wicking device 7 and an eel member 29 is attached to the tip portion eider 16b of the closure cap 16, the eello obtained when pressing the eel member 29 on the annular projection 7c. < Sixth Modality > Figures 6 (A) to (F) show several examples of the structure for attaching or rejecting the flame producing portion and the upward removal action of the wick 6 and the structure for attaching the wick 6 to the cover of the upper part 4 of the fuel tank with the wick holder 7. (A) is a structure wherein the flame producing section 63 and the head of the upward removal section 62 of the wick 6 are inserted into the wick eostenedor 7 and then join the caulking the lower end portion (or upper end portion) of the wick holder 7, and the wicking device 7 is fixed by screwing the fastening thread 7a on the outer periphery thereof within the hole. threaded 4a provided in the cover of the upper part 4 for sandwiching the O-shaped ring 18 in the bottom. (B) It is a structure similar to that indicated in the second embodiment (Fig. 2), wherein the lower end portion of the wick holder 7 is not caulked, the lower end of the head of the upward removal section 62 is fixed and maintained by the bottom section of the threaded hole 4a of the cover of the upper part 4, and the wick holder 7 is fixed to the cover of the upper part 4 when fixing it from above to intercalate the ring in the form of O 18 while joining the flame producing section 63 to the upward removal section 62. (C) is a structure in which the wick holder 7 is not formed with a fastening thread but is attached by means of a anchoring ring 33 when coupling an upper coupling portion 33a of the anchoring ring 33 with a stepped portion 7d of the wicking holder 7 and when screwing a fastening thread 33b into the outer periphery of the anchoring ring 33 within the bore hole 4a of the cover of the upper part 4, the fixing of the wick 6 with respect to the wick holder 7 is the same as in (A). (D) combines a structure for attaching the wick holder 7 to the upper part cover 4 similar to that of (C) and a structure for fixing the wick 6 similar to that of (B). (E) is a structure wherein a notch or U-shaped channel 7e is formed in the outer periphery of the wick holder 7, a supercharging portion 4e given with elasticity is provided in the cover of the upper part 4, and fixing is achieved by pressing the bottom portion of the wick holder 7 into the cover of the upper part 4 for coupling the tip of the protruding coupling part 4e with the U-shaped notch 7e, the retention of the wick 6 is the same as in (A) above. The liquid fuel emptied into the fuel tank section 5 of the lighter 1 or another burner is, in the case of a fuel alcohol, preferably one which uses an alcohol which is lower monovalent alcohol, specifically, methyl alcohol, ethyl alcohol or propyl alcohol, as its main component and having added thereto, one or more kinds of hydrocarbon compound having approximately the same boiling point as the main component, specifically, hexane, heptane, octane, nonane, cyclohexadiene, cycloheptene or other hydrocarbon saturated. This is because the flame is colorless with only an alcohol fuel, but the tip portion of the flame becomes a yellow lantern due to the red heat of the free carbon due to the addition of the saturated hydrocarbon.

A liquid fuel composed of at least one cyan between heptane, octane and nonane can also be used. A liquid fuel of a benzine hydrocarbon is also acceptable. On the other hand, liquid fuel burners other than cigarette lighters include blowtorches, torches and other lighting devices and lamps of that kind. < Test 1 > A test will be described, in which a lighter 1 incorporating the wick 6 was used, as described above, and the change in the shape of the flame in ignition and repeated use was measured. In this test, a lighter 1 was used where the wick 6 of the first embodiment (Figure 1), whose tip portion 6a of the flame producing section 61 was melt bonded, was retained in a wick holder 7 with a flat tip portion. As a comparative example, a lighter 6 was used as shown in Fig. 8, whose tip of the flame producing portion 60 was not melt bonded, a flat tip portion was retained in a wick holder 7 cbn. The operations of opening the closing lids 16 of both lighters, of operation of the rotary beating wheels 13 to turn on the wicks 6, of allowing the combustion to continue for a prescribed period of time and then the closing of the lids of the lids were repeated. closure 16 to seal the wicks 6 and extinguish the flames, and the change in the shape of the flames H was observed. In the comparison lighter 1, as the number of use increases, the tip of the flame-producing portion 60 of the wick 6 was worn as shown in figure 8, the diameter of the glass fiber of the tip of the flame-producing portion 60 was extended to 6 mm. (initial diameter: 3 mm.), the width of the flame ee therefore extended to 12 mm. (at a position of 3 mm from the lower end of the flame) against an H-shaped flame with a flame length of 30 mm. , a portion of the flame touched the rotating knock wheel 13 and this portion of the rotating knock wheel 13 was heated and increased in temperature. On the other hand, in the lighter according to the invention, as shown in Figure 1, although the number of use was increased, no change was observed in the shape of the tip of the flame producing section 61 of the wick 6. or the shape of the flame H and the flame did not touch the rotating knock wheel 13. The following will show the modalities in which the shape of the wick holder is modified to retain the wick. < Seventh Modality > Figure 9 shows the sectional, general structure of a lighter as in an example of a liquid fuel burner. The basic structure of the lighter 1 is as explained above, the wick 6 is installed by the attachment of a wick holder 77 to pass vertically through the cover of the upper part 4 in the fuel tank 2. The wick 6 is separate form of different materials in a upper flame producing section 61 and a lower upward removal section 62 and the two are joined by the cylindrical wick holder 77, which is made of metal and shaped to have a pointed portion inclined, with the lower end portion of the flame producing section 61 and the upper end portion of the upward removal section 62 in a contact state The lower end portion of the upward removal section 62 of the wick 6 makes contact with the fiber material 3 in the tank 2 and removes the liquid fuel impregnated in the fiber material 3 using capillarity. The flame producing section 61 of the wick 6 is ignited to burn and generate a flame H. The flame producing section 61 is made of glass fiber when making anojoe. for example as in FIG. 1, of fiberglass filament and by firing the tip portion 61a to form it into a dotted shape similar to the tip of a writing brush. The withdrawal section upwards 62, formed as a rod having a large diameter head portion 62a by the molding and inter-annealing of polyethylene powder, has its head portion 62a unscrewed in the lower portion of the wick holder 77 and brought into contact with the base 61b of the flame producing section 61 and the lower end portion of the wick holder 77 is caulked or stressed in this state, whereby the flame producing section 61 and the upward removal section 62 are integrally joined to form the wick 6. A closure cap 116 for prevention of evaporation is provided, to ablaze / cover the flame producing section 61 of the wick 6 together with the protruding portion of the wick holder 77. This closure cap 116 is rotated on pivot by a pin 17 at an end portion of the upper surface of the cover of the upper part 4 of the tank 2. On the inner surface of the closure cap 116 an inner cover is provided or for enclosing the outer periphery of the wick holder 77 of the wick 6 and covering / sealing the wick 6. A 0-shaped ring 19 is attached horizontally to the outer peripheral root portion of the wick container. 77 and the inner peripheral surface of the inner cover i of the closure cap 16 engages the member to increase the eellant property. A face plate 48 ee provides on the upper surface of the cover of the upper part 4.In the lighter 1 of the above structure, the tip portion 77a of the wicking device 77, which surrounds and supports the outer periphery of the slag-producing section 61 of the wick 6, is shaped to be bieelated so as to differ in height in the peripheral direction. The wick holder 77 is positioned, so that the portion of the inclined tip portion 77a, which has the highest height, is located near the rotating striker wheel 13, which is the ignition mecanning 10, and is interposed between the flame H and the rotating hitter wheel 13. The dimensions of the wick holder 77 are, for example, outer diameter of 4 mm., inner diameter of 3 mm. and inclination angle of the tip portion 77a of 45 degrees. The height of the flame producing portion 61 of the wick 6 projecting from this wick holder 77 is 3 mm. in the most exposed portion. The distance between the center of the wick 6 and the center of the rotating hitter wheel 13 is adjusted to 8 mm. In this embodiment, under conditions adjusted to make the flame length 30 mm., The center of the flame H is offset relative to the center of the wick 6 by d = 2 mm. On the opposite side of the rotating knock wheel 13, the flame width is 8 mm. and the largest width of the flame is 3 mm. from the lower end of the flame. With this flaming shape, the flame H does not touch the rotating beating wheel and can obtain good condition of flame and light, even if the distance between the center of the wick 6 and the center of the rotating beating wheel 13 is adjusted to a reduction of 8 mm. as stated above. Although the tip portion 6a of the fiberglass flame producing section 61 of the wick 6 is melt bonded in this seventh embodiment, it can also be left as an unbonded flame producing portion 60, as shown in the figure 16. In this case, the tip end portion of the flame producing portion 60 is preferably structured so as not to "contact" / interfere with the opening / closing path of the closure cap 116. < 0ctava Modality > As shown in Figure 10, the lighter 1 of this embodiment has the same type of wick holder 77 as in the previous embodiment, but the closure cap 120 ee of a different type In the closure cap 120 of this mode, an end portion of a main body configured in the form of a flat plate is pivotally mounted on the cover of the upper part 4 of the tank 2 by an eepiga 21, the tip portion on the opposite side of the The pivot portion is provided to extend lengthwise and engage with the rotating knocking wheel 13 of the ignition mecha- nism 10, and a projection 120b is provided for the opening operation, at the tip portion, the closing condition which is in a been inclined. A cup-shaped closure portion 12Oa is attached to the inner surface of the main body of the closure cap 120 to be in front of the inclined shape of the inclined tip portion 77a of the wick holder 77. This closure portion 1290a is constituted, so that when closed, its angle of inclination is the same as the angle of inclination of the wick holder 77. A seal member 22 is fixed to the tip edge portion of the closure portion 120a and this member seal 22 is structured to press on the inclined tip portion 77a of the wick holder 77. The flame producing section 63 of the wick 6 in this embodiment is shaped to a round rod not of glass fibers but of a body Sintered porous glass or ceramic porous sintered body, contains continuous bubbles (capillary paeajes) internal and is thin in the tip portion. Its upper portion is mounted to extend above the tip surface 77a of the wicking device 77 by a desired amount (3mm in the exposed portion). The adjustment of this protruding amount, the diameter and the like determine the size of the flame. For example, it is constituted to have an outer diameter of 3.0 mm. and a length of 10 mm.

On the other hand, the upward withdrawal action 62, whose tip portion is supported at the end of the flame producing section 63, is again a porous material made of a sintered body of polyethylene powder and configured in a similar manner to a round rod. Other aspects form those of the seventh embodiment. The closure cap 120 of that embodiment is simplified in the structure and since the closure portion 120a achieves sealing by pressing on the inclined tip portion 77a by means of the seal member. 22, without the adjustment above the outer periphery of the wick holder 77, the distance between the support position by the shank 21 of the closure cap 120 and the center of the wick 6 can be shortened and the distance between the holder wick 77, that is, the wick 6, and the knocking wheel 13 of the ignition mechanism 10 can be further shortened to make the lighter i compact. < Ninth Modality > As shown in Figure 11, the shape of the tip portion of the wick 6 of the lighter 1 of this embodiment is different. The flame producing section 63 of the wick 6 is configured in the form of a rod of a porous ceramic sintered body and its tip portion is biased away in the lateral portion opposite the support pin 17 of the closure cap 16, by which is structured to avoid interference with the opening / closing rotation of the closure cap 6. The closure cap 16 is structured to openably / closably cover the flame producing section 63 of the wick 6, together with the above portion of the wicking device 77 but not to cover the upper portion of the ignition mechanism 10. A seal member 22 is attached to the tip portion of the sealing portion of the closure cap 16 and this seal member is formed for attain sealing by pressing on the cover of the upper part 4 around the wick holder 77 in the closing operation of the closure cap 16. < Tenth Modality > As shown in Figure 12, the shapes of the tip portion of the wick 6 and the wick holder 77 of the. lighter 1 of this mode, are different. The flame-producing section 63 of the wick 6 is configured in the shape similar to a rod of a porous ceramic sintered body and the corner of its tip portion is removed from the side portion opulete to the support epee 17 of the closure cap 16 and, in addition, the tip portion 77a of the wicking holder 77 is also removed from part of its highest portion, so that they are structured to prevent transfer with the opening / closing rotation of the closure cap . Other aspects are the same as in the ninth modality. < Eleventh Modality > As shown in Figure 13, the wick 6 of the lighter 1 of this embodiment is integrally formed of all of the same material. Another aspect is structured similarly to those of the tenth modality. In other words, the wick 6 has its flame producing section 63 and the upward removal portion 64 formed integrally of a porous ceramic sintered body, which is retained by the wick holder 77 and has the same configuration with that of the figure 12 < Twelfth Modality > Figures 14 (A) to (F) show several examples of the seal structure of the flame producing section of the wick 6 by the closure cap 16 in a lighter equipped with a wick holder 77 with an inclined tip. (A) is a structure, wherein a member of the eello is positioned on the upper surface of the cover of the upper part 4 about 1 eostenedor. of wick 77 and seals by pre-engaging the tip portion 16b of the closure cap 16 on the eel member 25. (B) is a structure, wherein an annular projecting portion 4b is provided on the upper surface of the cover of the upper part 4 around the wick holder 77, while a ring-shaped seal member is attached to the earring tip portion 16b of the closure cap 16, the eel obtained by pressing the seal member 26 the ring-shaped upper part 4b. (C) ee structure, where a ring in the form of 0 27 is fixed horizontally around the wick holder 77, the eel obtained by supporting the inner surface of the closure cap 16 on the 0-shaped ring 27. (D) is a structure, wherein a seal member 28 is provided biased in the inclined tip portion. 77a of the wick holder 77, the eel obtained when pressing the inclined lower end portion 16c of the closure cap 16 onto the annular seal member 28. (E) is a structure, wherein an annular projecting portion 77b is provided in the inclined tip portion 77a of the wick holder 77 and a seal member 29 is attached to the inclined lower end portion 16c of the closure cap 16, the seal which is obtained by pressing the seal member 29 on the over-heated annular part 77b. (F) is a structure, wherein an O-shaped ring 30 is adjusted on the outer periphery of the wick holder 77 biased in parallel with the inclined tip portion 77a, the seal which is obtained by pressing the inner surface of the inclined lower end portion 16c of the closure cap 16 on the O-shaped ring 30. < Thirteenth Modality > Figures 15 (A) to (F) show several examples of the structure for attaching or holding the flame producing section and the upward removal section of the wick and the structure to attach the wick to the combusible tank together with the Wick holder. (A) is a structure, wherein the flame producing section 63 and the head of the upward removal section 62 of the wick 6 are inserted into the wick holder 77 and then attached to the caulking the lower end portion ( or upper end portion) of the wick holder 77, and the wick holder 77 is attached by screwing a fixing thread 77c on the outer periphery thereof, into the threaded hole 4a formed in the cover of the upper part 4 for sandwich the O 18 ring in the background. (B) is a structure, wherein the lower end portion of the wick holder 77 is not caulked, the lower end of the head of the upward removal section 62 is held by a retaining portion 4c of the cover of the part 4 above, and the wick holder 77 is attached to the cover of the upper part 4 by holding it in the roecado hole 4a above, to sandwich the O-ring 18 while connecting the flame producing section 63 to the upward removal section 62. (C) is a structure, wherein the wick holder 77 is not formed with a fastening thread, but is joined by means of an anchoring ring 33 when coupling a coupling portion 33a of the anchoring ring 33 with a stepped portion 77d of the wick holder 77 and by screwing a fastening thread 33b on the outer periphery of the anchoring ring 33 into the threaded hole 4a of the cover of the upper part 4, the fixation of the wick 6 with respect to the wick holder 77 is the member as in (A). (D) combines a structure for attaching the wick holder 77 to the cover of the upper part 4 similar to that, -the one of (C) and a structure for fixing the wick 6 similar to that of (B). (E) is a structure, wherein a U-shaped notch 77e is formed in the outer periphery of the wick holder 77, a protruding part of coupling 4e given with elasticity ee provided in the cover of the upper part 4, and the unit achieves by preecting the bottom portion of the wick holder 77 in the cover of the upper part 4 to engage the puna of the projecting coupling part 4e with the U-shaped notch 77e, the retention of the wick 6 it is the same as in (A) above. (F) combines a structure for attaching the wick holder 77 to the cover of the upper part 4 similar to that of (E) and a structure for fixing the wick similar to that of (B). < Test 2 > Then, the results will be indicated when a lighter was used, similar to that of the seventh embodiment (figure 9), except that the flame-producing section of the wick, incorporated in the member was like that shown in figure 16 whose tip portion is not fused, the wick was fired and it was allowed to burn, and the change in the shape of the flame was obtained when a metal plate, which simulates a lighter, was brought near the flame, by measuring the distance between the flame and the metal plate. The shape of the metal plate was: height of 8 mm. from the lower end of the flame and 6 mm wide. , 8 mm., Or 10 mm. Each metal plate simulated an ignition device (strike wheel) and the metal plate changed the shape of the flame by changing the air flow in relation to the flame. As a comparative example, the state was measured when identical metal plates were brought near the flame of a lighter, where the tip portion of the wick holder was of constant height in the peripheral direction and had a horizontally flat shape, while It is identical in other aspects. Figure 17 shows the results of the measurement for the product of the invention and Figure 18 shows the results of the measurement for the comparative example. In the case of figure 18 for the comparative example, in which the tip of the wick holder was flat, when the distance A between the metal plate and the center of the wick became 7 mm. , the distance B between the flame and the metal plate was 2 mm. to the 6mm plate width. and 8 mm. and made the contact with the flame in the case of the metal plate of a width of 10 mm .. When the diet A between the metal plate and the center of the flame made 5 mm., the metal plates of all widths of plate touched the flame. On the other hand, in the case of Figure 17 according to the invention, in which the tip portion of the wick holder 77 was tilted, when the diet A between the center of the wick and the metal plate became 7. mm., the distance B between the lateral surface of the flame and the metal plate was 4 mm. for metalic plates with a width of 8 mm. and 10 mm. and it was 5 mm. for the metal plate with 6 mm width. , value that they are greater than in the comparative example. The above results mean that in the igniter configuration, if the distance between the wick 6 and the ignition device 10 is fixed, the distance can be secured between the flame and the lighter by tilting the tip of the wick holder 77, so that the rise in the temperature of the ignition device can be prevented, the ignition device can be brought closer to the wick, the lighter can be made smaller and the reliability of its ignition effectiveness can be increased.

Claims (6)

1. CLAIMS 1. - In a liquid fuel burner that consists of a wick to pull up by means of capillarity in an extraction section, liquid fuel that has to be burned in a flame producing section, an ignition mechanism to ignite the Flame producing section of the wick and a lid to prevent evaporation capable of sealing the flare producing section of the wick in an openable and lockable way, a wick for the liquid fuel burner is characterized by the flame producing section of the wick it is formed with a shape that has a thinned tip.
2. 2. - A wick of a liquid fuel burner according to claim 1, characterized in that the lid is constituted to open and close around a pivot at one end thereof and the tip of the flame producing section is removed in a opposite side of the lid pivot.
3. 3. - A wick of a liquid fuel burner according to claim 1, characterized in that in the wick a tip of the flame-producing section made of fiberglass is melt-bonded to give it a pointed shape like the tip of a brush.
4. 4. - A wick of a liquid fuel burner according to claim 3, characterized in that the wick is formed by tied glass fibers, heat and melt a portion of them with a high temperature burner and pull up and separate the molten portion.
5. 5. - A wick of a liquid fuel burner according to claim 1, characterized in that the wick has a flame-producing section composed of a porous glass material having continuous bubbles or a porous ceramic material sintered and formed in the form thinned
6. 6. - A wick of a liquid fuel burner according to claim 1, characterized in that the mecha is formed by different materials in the extraction section and flame producing section. 1 . - A wick of a liquid fuel burner according to claim 1, characterized in that the extraction section and the flame producing section of the wick are integrally formed of the same material. 8.- In a liquid fuel burner consisting of a wick to pull up by means of capillarity from an extraction section, liquid fuel to be burned in a flame producing section, an ignition mechanism to ignite the section producing flame of the wick and a lid to prevent evaporation capable of sealing the flame producing section of the wick in an openable and lockable manner, the liquid fuel burner characterized in that the wick holder to hold the wick holder to hold the Eeta wick provided around the flame-producing section at the tip of the wick and a wick holder with a different height is formed in a circumferential direction, a high portion of the tip is disposed interposed between the flame-producing section of the wick. wick and the ignition mechanism. 9. A liquid fuel burner according to claim 8, characterized in that the lid is constituted to open and close around a pivot in an end portion thereof and an edge portion of its sealing portion to seal the producing section of the container. Flame of the wick is formed with different height in a circumferential direction in addition to the shape of the tip of the wick holder. 10. A liquid fuel burner according to claim 8, characterized in that a tip of the flame producing section on the side opposite the pivot of the lid is removed in the wick. 11. A liquid fuel burner according to claim 1, characterized in that in the wick a tip of the flame-producing section made of fiberglass is melt-bonded to give it a pointed shape like the tip of a brush. 12. A liquid fuel burner according to claim 8, characterized in that the wick is composed of a porous glass material having continuous bubbles or a porous sintered ceramic material. 13. A liquid fuel burner according to claim 8, characterized in that the wick is formed of different materials in the extraction section and in the flame producing section. 14. - A liquid fuel burner according to claim 8, characterized in that the extraction section and the flame producing section of the wick are integrally cooled of the same material.